I started diving on a Thor, then went to an Odin, and last weekend I bought an Xstream. The Xtream is very nice. I was using it at ~135ft in 38 degree water and it was wonderful. I now use my Odin as my backup. With the Xsteam, I didn't get any of the ice chunks that I sometimes get with the Odin, but I can't say for sure the Odin would have done it on that particular dive either. I have seen several different brands of regulators fail at depth, but I've never had a problem with one of my Poseidons. For this reason, you won't hear me recommend any other brand.